Influence of a concurrent exercise training program during pregnancy on the placenta mitochondrial DNA integrity and content of minerals with enzymatic relevance. The GESTAFIT project

•This novel concurrent exercise program during pregnancy increased placental mtDNA copy number.•This novel concurrent exercise program during pregnancy decreased placental mtDNA deletions.•Placentas from pregnant women who exercised presented higher manganese concentrations.•Improved placental bioenergetics and antioxidant capacity may partially explain these findings.